Everyone that I spoke with was extremely friendly and looking to help you throughout the process. The company is team oriented and the employees seem to be pretty intelligent and generally outgoing. They want you to have a clear idea in your head going into the interview of what Deloitte is all about and why you want to be a part of that. Other firms I've interviewed for in the past weren't as concerned with that. They want you to have an idea of how you would fit in and why it is a good fit for you, so definitely be able to list a few specific examples of that. The interview process tends to be quick. I had a phone interview over the winter holidays and heard back a day or two after that I had moved on to the final round. Then the first week in Jan I had a superday with 3 different people (2 behavioral and 1 case). I heard back from them a few days later on their decision. Even if the position is more on the technical side, the interviews are focused on behavioral type questions and how you would fit in with company culture. It is very important that you present yourself as a team player and that you talk about how you interact with your team as well as your superiors and people outside the team. Of course, think of questions about the company culture to ask for after the interview. If you are stuck on those, ask about mentorship within the company, if they pay for advanced degrees and how their internal points system works (for participating in company events and clubs). The case study was to create a budget. You have to ask for information to complete it, so just stay calm and think through it. It isn't a complicated case since they just want to see how you reason. It's more common sense type scenario. After that they give you a situation where the client wants to cut costs and you have to go through how you would figure out what to cut. Just ask about the importance of different items and make some assumptions. As long as they are reasonable and you explain yourself, you'll be fine.